86 BULLETIN" 479,. U. S. DEPARTMENT OF AGRICULTURE. 
blood, it is well to warn against the use of any rich organic fer- 
tilizers shortly before seed sowing. Ammonium hydroxide when 
applied at the old Garden City Nursery was followed 3 or 4 weeks 
later by the almost complete destruction of the seedlings, apparently 
by damping-off fungi, although it is not absolutely certain that fungi 
were responsible. 
COSTS OF OPERATIONS. 
The cost of nursery operations, which are reflected in the costs of 
stock, are governed by so many conditions that they vary consider- 
ably at different nurseries and from year to year. The different 
elements which effect the cost have been pointed out in the foregoing 
pages. With .the bringing of all nurseries up to a good economic 
capacity, with a gradual decrease of overhead charges, which in 
some instances are at present rather high, and with still more im- 
proved methods of nursery practice and familiarity with the differ- 
ent species, it is expected that average costs can be considerably 
reduced in the future. The following represent some of the actual 
costs of past nursery operations : 
Operation. 
Cost per thou- 
sand. 
Growing 1-0 stock 
Care of 2-0 stock 
Transplanting stock 
Care of transplants first year 
Digging, packing, and snipping of stock . 
$0. 33 to SI. 50 
. 06 to . 50 
.77 to 2.04 
.18 to 1.03 
.74 to 2.43 
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